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23 42 519 Replacing pressure accumulator (GS7S47BG SMG)

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IMPORTANT: Before working on hydraulic system:
  • Reduce pressure in hydraulic system by means of Service Function in DIS Tester (Replacement and Repair) 
  • Disconnect HYDRAULIC PUMP RELAY  in electronics box

    Do not reconnect relay for entire duration of repair work

IMPORTANT: After working on hydraulic system:
  • Perform bleeding using DIS Tester, refer to Service Functions in DIS Tester (Replacement and Repair) 

Necessary preliminary tasks: 

Release screw (1).

Tightening torque: 22 Nm

Bend clamp (2) open slightly.

Release pressure accumulator (3) at hexagon head (5).

Remove pressure accumulator (3) with damping ring (4) towards rear.

Tightening torque: 29 Nm

Installation: 

Replace screw (1).

Make sure damping ring (4) is cleanly seated.

Fig 1: Identifying Pressure Accumulator With Damping Ring
G04742272Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Fig 2: Identifying Installation Position Of Sealing Ring
G04742273Courtesy of BMW OF NORTH AMERICA, INC.